Weather in St Louis in December 2024
- December is usually the wettest month of the year in St Louis;
Average weather
Average temperature in St Louis in December
Going from a maximum of +66°F during the day to a minimum of +21°F during the night, the temperature in December averages around +52°F.
The average maximum temperature goes down 24% by the end of the month, compared with the beginning of the month, from +55°F to +45°F.
Is St Louis warm or cold in December?
St Louis is typically chill in December.
Maximum temperatures go down compared to the previous month from +55°F to +45°F. The minimum temperature also goes down from +39°F to +30°F.
Pack a jumper and a jacket as there will be cooler temperatures.
December is one of the coolest months in St Louis, here is the comparison with other months:
Climate in St Louis in December
| November | December | January | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +55°F | +45°F | +41°F | ||||
| Min. temperature | ||||||
| 0°F | -17°F | -17°F | ||||
| Max. temperature | ||||||
| +82°F | +75°F | +72°F | ||||
| Rainfall | ||||||
| 86 mm | 57 mm | 43 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 71% | 74% | 73% | ||||
| Air pressure | ||||||
| 1018 HPa | 1019 HPa | 1020 HPa | ||||
| Sunny days | ||||||
| 9 | 7 | 7 | ||||
| Cloudy days | ||||||
| 9 | 12 | 12 | ||||
| Rainy days | ||||||
| 10 | 7 | 5 | ||||
| Snowy days | ||||||
| 1 | 5 | 7 | ||||
December typically has worse weather conditions compared to November. It’s getting colder in December. From +55°F in the day, the average maximum temperature lowers to +45°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 86 mm to 57 mm. Humidity rises from 71% to 74%. The average wind speed doesn’t change much during December, staying around 3 m/s. The days becoming less sunny, going from 9 sunny days in November to 7 in December.
January brings much the same weather, it remains ok.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in St Louis is gradually increasing during December, going from 3 m/s to 3 m/s over the course of the month.
Rain
Snow
December is one of the snowiest months in St Louis.
Here’s how December is compared with other months in the amount of snow, total mm:
How was the weather last December in St Louis?
Climate Change Over the Years
The climate in St Louis in December has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+64°F) and the highest in 2012 (+71°F). The driest year was 2007 with only 666 mm of rainfall, and the wettest year was 2020 with 1575 mm.
FAQ
Is December a good time to visit St Louis?
Can you sunbathe in St Louis in December?
Is St Louis rainy in December?
Is it sunny in St Louis in December?
Other cities in USA
Monthly weather in St Louis
Source of the data
For this page, we’ve looked at the typical weather in St Louis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.